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BoP Lab / Classes / CFC

CFC vs FRI vs P pace at every track

Class · click a class to switch, + to compare alongside (up to 4)
AS+B-Spec+CFC×EP+F600+FA+FC+FE2+FF+FP+vsFRI×FV+FX+GT1+GT2+GTX+HP+vsP×P2+SM+SMX+SRF3+STL+STU+T1+T2+T3+T4+Show 176 inactive classes
Series
Reference · what % is measured against, 2 events
Tracks · untick to narrow
2:012:022:031 rule change between Runoffs 2025 and Runoffs 20261 ▾P race best at Runoffs 2025: 2:02.122 (Bart Wolf)P race best at Runoffs 2026: 2:03.283 (Lawrence Loshak)P qualifying best at Runoffs 2025: 2:01.180 (Lee Alexander)P qualifying best at Runoffs 2026: 2:02.281 (Perry Richardson)Road America · Runoffs 2025Runoffs2025Road America · Runoffs 2026Runoffs2026
CFCFRIPsolid race · dashed qualifying · slower is lower
EventCFCFRIP
Qual best Race best Trap Qual best Race best Trap vs CFC Qual best Race best Trap vs CFC 
Road America Runoffs 20262026-09-282:02.281Perry Richardson · fastest of 10 · top 5 within 1.3s+1.101s (+0.91%)2:03.283Lawrence Loshak · fastest of 10 · top 5 within 0.8s+1.161s (+0.95%)165.6Jason Miller+0.7 mph (+0.4%)
1 rule change (P: 1)1 suspension & brakesshowhide
  • P Request to Continue to Allow Carbon Brakes #39476suspension & brakes
Road America Runoffs 20252025-09-292:01.180Lee Alexander · fastest of 14 · top 5 within 1.5s2:02.122Bart Wolf · fastest of 13 · top 5 within 2.1s165.0Jason Miller
7 earlier rule changes on record, in force before Runoffs 2025 (from 2025)2 induction · 2 weight · 1 engine · 1 tyres & wheels · 1 othershowhide
  • P 13B Rotary Engine Rules Change Request #38856induction
  • P Add Radical Cup series Radical SR3 spec line to Table 1 #38916other
  • P Clarify spec line cars language #38943weight
  • P RM 25-05 - Prototype Engine Table A, 2 Cycle Restrictor Change #38929induction
  • P Add missing punctuation marks #38150weight
  • P Correct text in engine table notes #37606engine
  • P Update Prototype class designation #37653tyres & wheels

By track

TrackEvents 
Road America2
About this data
Every event the class ran, at any track, oldest to newest on the chart and newest first in the table. Each point is the class's best lap as a share of the reference class's best on the same day: the weather and the day cancel out, so one figure compares across years where lap times cannot; a class that suits one track more than another still reads differently there. It still moves when the yardstick's own balance changes or its field thins, and an event the yardstick did not run has no point. A best from fewer than three cars is greyed. The rule changes that took effect between two events are folded between their rows.